Roof-covering.



C. O. DILL. HOOP COVERING.

APPLICATION FILED APE.30, 1907.

amend PATENTEDJEEB. 18, 1908.

' I ments in Roof-Coverings, of which t CLAY O. DI LLJOF DENVER, COLORADO.

noor-oovnnme.

Specification of Letters I atent.

. Application filed A ril 80. 1907. SerialNo. 371,174.

To all whom it may concern:

Be it known that'I, CLAY C. DILL,

iron Fe O chemicall a citizen i oxid of1ron,'m1xed to t e consistency of known as sesqui thin of the United States, residing in the city and mortar in about the proportion of one gallon county of Denver, State of Colorado, have invented certain new and useful Im roveie following is a specification.

The object of my invention is to provide a durable and eiiective water-proof'coverm adapted for railway and street cars and a movable structures, such as steamboat decks, cab roofs, etc It will be found, however, that the invention is also adapted for general use upon all structures requiring water-proof protection. 7

In the-drawings-Figure 1 is a diagrammatic 'plan view ofpartof a roof covering constructed in accordance with my invention,'certain parts thereof being torn a ay the use of "fiber paper,

I consider it within serves to fasten paper.

to better exhibit the construction. Fig. 2 is a diagrammatic section of a roof covering constructed in accordance withmy invention, the thickness of the layers being in some instances exaggerated in order to render the construction clear.

. In constructing a roof covering according to my invention I first appl to the roof structure'a layer of paper, re erably a wood thoroughly filed with any sub.- stance which will prevent the paper from absorbing oil or being otherwise actedupon by it. Thepaper may suitable means, and the oil proof properties may be imparted thereto by siaing consisting of some ordinary glue. v

the scope of my invention to use any sizing for the paperwvhich will impart the desired properties thereto, and to use any paper which may be suitable 'for the purpose. The sizing which is applied to the paper not only serves the purposeof rendering it impervious to the oil contained in the composition described below, but also the lapped joints of the Upon the sized paper above described I apply a composition formed of oil and some suitable mineral substance. in practice I have found the desired result is obtained by raw linseed oil and red oxid of another layer be attached to the surface to be covered bytaclrs or any other 1 plastic composition dry Portland cement, or.

of oil to tw enty-five pounds of plastic composition or mortar may be applied with a trowel an inch. v I

.Over the composition ofoil and mineral, while still soft, canvas or other cloth is stretched and tacked at the sides and ends or otherwise fastened to hold it in place. The canvas or other cloth used may be of any w ight desired and will vary according to the location of the surface to which the water proofing is applied. Above the cloth I apply of plastic composition consisting 0f-oil and some mineral substance. kl have found that the same ingredients (le scribed in connection with the plastic coinposition abovereferred .to are satisfactory, but the mixture should preferably be of the consistency of stiff mortar, the proper proportions being about one gallonof boiled linseed or other oil to'thirty pounds of sesquioxid of iron or other suitable mineral substance. This composition should be applied with a trowel or other spreader to the thickness of about one thirty-second to one sixteenth of an inch.

Patentedfeb. 18, 190%..

oxid. This or other spreader to the thickness of one-sixteenth to one-eighth of The roofing is completed by sprinkling and brushing in upon the last mentioned layer oi other substance, which will quickly harden.

The roofing above described possesses the desirable property of being light and some what flexible, by reason of the oil forming art thereof, and this flexibility is preseteed by reason of the fact that the oil is protecaed both above and below against absorption or evaporation. I have found in practice that roofs constructed in accordance with my invention will retain their flexibility for urany years.

I claim:

1. A roof covering comprising a layer of oil proof paper, a' layer of mortar formed of oil and a mineral substance, and a layer of cloth covered by an impervious material.

2. A roof cover-mgcomprising a layer of it impervious to oil, a layer of oil mixed with of iron, and a, layer formedol cement sprin- & mineral, a layer of cloth, a second layer of kled upon the last mentioned layer. oil and mineral, and a layer of cement. y

3. A roof covering comprising a layer of I CLAY BILL paper coated with glue, a layer of mortar con- Witnesses:

taimng oil and sesqui-oxid of iron, :1 layer of l A. S. BROOKS, canvas, a second layer of oil and sesqui-oxid I J. G.- McMURRY. 

